Spiral Sand Washer

Spiral Sand Washer

9 month ago

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Henan Zhongyu Dingli Intelligent Equipment Co., Ltd.

 9 month year

Product details

Precision Spiral Sand Washing Machine for High-Purity Aggregate Cleaning in Mining and Construction Processing Lines

Precision Spiral Sand Washing Machine — Equipment Overview

The Precision Spiral Sand Washing Machine (DLLXS Series) is a core cleaning device engineered for mining aggregate processing, sand and gravel plants, building materials, construction, and chemical industry applications. With processing capacities from 70 to 320 t/h and a maximum feed size of 10 mm, it delivers a cleaning rate above 95%, reducing final aggregate mud content to ≤0.5% and boosting fine sand recovery (0.15 mm+) to over 92% — well above the industry average of 85%.

Spiral blades are treated with laser-clad WC-12Co hard alloy coating at HRC 62–65 hardness, offering wear resistance three times higher than conventional welded blades. The impeller drive bearing system is fully isolated from water and sand through a patented seal design, extending mean time between failures (MTBF) to over 5,000 hours. A variable-frequency PLC control system dynamically adjusts screw speed between 3–8 r/min, keeping unit energy consumption at just 1.5–1.9 kWh/t. The closed-loop water recycling system achieves a wastewater reuse rate of ≥95% with ton-sand water consumption ≤1.2 m³, fully complying with JB/T 14386-2022 and global green mine construction standards.

Precision Spiral Sand Washing Machine — Process Flow

Step 1 — Material Feeding Pre-crushed aggregate from upstream jaw crushers, cone crushers, or sand makers is conveyed into the spiral sand washer inlet. Feed material with particle size ≤10 mm enters the washing tank at a controlled rate to ensure stable flow distribution.

Step 2 — Layered Turbulent Scrubbing The dual-curve flow guide and zonal flow stabilization tank design, optimized by CFD fluid simulation, creates a layered turbulent flow field. Fine-grained minerals between 0.15–2.5 mm undergo 3–5 cycles of tumble cleaning, thoroughly stripping clay, dust, and abrasive impurities from aggregate surfaces.

Step 3 — Spiral Conveying and Dewatering The rotating spiral blades convey cleaned aggregate upward along the inclined trough while simultaneously draining excess wash water. Rotary speed is variably controlled between 3–8 r/min to match material moisture and impurity content in real time.

Step 4 — Grading and Overflow Control An adjustable overflow weir precisely controls aggregate grading, ensuring finished materials meet the feed specifications of downstream beneficiation equipment, vibrating screens, and sand makers. Fine sand particles are directed into the dedicated recovery module rather than being lost with overflow water.

Step 5 — Discharge and Water Recycling Cleaned, dewatered aggregate is discharged at the upper outlet, ready for downstream processing or stockpiling. Wash water is collected and recycled through the closed-loop water system, achieving a reuse rate of ≥95% and minimizing fresh water consumption to ≤1.2 m³ per ton of sand processed.

Precision Spiral Sand Washing Machine — Service Content

Service Phase	Service Content
Pre-Sales Consultation	Material analysis, impurity content assessment, capacity matching, DLLXS model selection recommendation
Process Integration Design	Crushing line matching with jaw crusher, cone crusher, vibrating screen, and sand maker; complete process flow layout
Manufacturing	Laser-clad spiral blade fabrication, NM400 tank body construction, full QC inspection before delivery
Installation and Commissioning	On-site installation guidance, bearing seal verification, variable-frequency drive calibration, trial run under load
Operation Training	Operator training on start-up procedures, screw speed adjustment, overflow weir setting, and wear part inspection
After-Sales Support	18-month whole-machine warranty, 24/7 remote technical support, global spare parts delivery covering Asia, Africa, Europe, and the Americas

Precision Spiral Sand Washing Machine — Technical Parameters

Model Specifications

Model	Production Capacity (t/h)	Feed Size (mm)	Rotary Speed (r/min)	Motor Power (kW)	Sink Size L x W x H (mm)
DLLXS1590	70 - 110	≤10	13	30	10200 x 2675 x 2350
DLLXS1890	130 - 160	≤10	11.5	37	10596 x 3045 x 2350
DLLXS2011	170 - 250	≤10	10	37	12175 x 3280 x 2950
DL2LXS1890	260 - 320	≤10	11.5	37 x 2	10596 x 4710 x 2350

Precision Spiral Sand Washing Machine — Project Cases

Case 1 — Iron Ore Processing Plant in South Africa A large iron ore beneficiation facility in Johannesburg integrated four units of DLLXS2011 into their aggregate pre-treatment line. Processing crushed iron ore at a combined 900 t/h, the machines reduced feed mud content from 4.2% to ≤0.5%, directly improving downstream magnetic separation efficiency by 18%. The closed-loop water recycling system reduced daily fresh water consumption by over 2,000 m³, meeting South African Department of Water Affairs compliance requirements.

Case 2 — Quartz Sand Processing Line in Malaysia A quartz sand producer in Selangor deployed two units of DLLXS1890 to clean and grade 0.3–2.0 mm quartz aggregate destined for the glass manufacturing industry. The machines delivered a cleaning rate of 96.5% with final silica purity exceeding 99.2%, meeting international glass-grade quartz sand specifications. Fine sand recovery at 93% significantly reduced material losses compared to the customer's previous open-circuit washing system.

Case 3 — Mobile Open-Pit Aggregate Operation in Saudi Arabia A construction aggregate contractor in Riyadh integrated one unit of DL2LXS1890 with a Mobile Crusher module for on-site cleaning of crushed limestone at 280 t/h. The self-contained closed-loop water system enabled continuous operation in a water-scarce desert environment, with ton-sand water consumption maintained at 1.1 m³. The 18-month warranty and dedicated spare parts supply ensured uninterrupted operation throughout a 14-month highway construction project contract.

Precision Spiral Sand Washing Machine — FAQ

Q1: What is the difference between the DLLXS single-spiral and DL2LXS double-spiral models, and how do I choose?

A: The DLLXS series (DLLXS1590, DLLXS1890, DLLXS2011) uses a single spiral configuration suitable for capacities from 70 to 250 t/h, ideal for medium-scale sand and gravel plants, mining aggregate lines, and non-metallic ore processing. The DL2LXS1890 features a dual-spiral layout within a single tank, handling 260–320 t/h while maintaining the same compact footprint as the DLLXS1890 — the recommended choice for high-throughput operations where space is constrained. Our technical team provides free capacity matching analysis to confirm the correct model for your production requirements.

Q2: How does the patented bearing isolation design extend equipment service life in wet mining environments?

A: The impeller drive bearing system is fully isolated from the washing tank through a multi-stage seal structure that prevents water, sand, and chemical impurities from entering the bearing chamber — a patented design that addresses the primary failure mode in conventional spiral sand washers. Combined with the NM400 wear-resistant steel tank body and laser-clad spiral blades rated at HRC 62–65 hardness, the overall MTBF exceeds 5,000 hours under continuous operation. This translates to reduced unplanned downtime, lower spare parts consumption, and significantly reduced maintenance labor costs over the equipment lifecycle.

Q3: Does the Precision Spiral Sand Washing Machine comply with environmental regulations for wastewater discharge?

A: Yes. The built-in closed-loop water recycling system achieves a wastewater reuse rate of ≥95%, limiting ton-sand fresh water consumption to ≤1.2 m³. All wastewater treatment parameters comply with JB/T 14386-2022 industry norms and are compatible with global green mine construction policy requirements across Asia, Africa, the Middle East, and Europe. For operations in water-scarce regions or those with strict effluent discharge permits, the system can be further integrated with a thickener and filter press to achieve near-zero liquid discharge, and the modular design supports connection to Mobile Crusher units for fully self-contained on-site cleaning with minimal environmental footprint.

Our sand and gravel aggregate production lines boast extensive and all-round coverage, and we offer a complete range of configurations from individual standalone equipment to full turnkey production lines, including Crushing Equipment, Sand Making Equipment, Screening Equipment, Feeding Equipment, Mining Conveyor and Mobile crusher. We provide customized crushing and processing solutions for a full spectrum of materials including bluestone, limestone, basalt, granite, pebble, coal gangue, calcite, quartz stone, dolomite, iron ore, barite, diabase, tuff and high calcium limestone, as well as targeted processing solutions for kaolin. We also deliver professional crushing solutions for industrial solid wastes such as slag and tailings, and comprehensive treatment solutions for construction & demolition waste. In addition to fixed production line solutions for various materials, we also supply flexible Mobile Crawler Unit Solutions to meet diverse on-site operation needs of sand and gravel aggregate production.

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Henan Zhongyu Dingli Intelligent Equipment Co., Ltd.

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9 month

Address: Xinxiang, China

Main Product: Crushing Equipment, Sand Making Equipment, Screening Equipment, Feeding Equipment, Mining Conveyor, Mobile Crusher

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